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Transcription and Regulation

Transcription and Regulation
Transcription factors are

promoters
TATA boxes
CATT boxes
proteins which bind to DNA and regulate transcription

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Transcription and Regulation
The nucleons of eukaryotic cell has

RNA polymerase III
all of these
RNA polymerase II
RNA polymerase I

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

highly glycosylated in their active forms
interchangable with DNA polymerases
multisubunit enzymes
only active inside the cell

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Transcription and Regulation
Transcription by E. coli polymerase occurs in

three phases known as initiation, elongation and termination
None of these
two phases known as initiation and termination
four phases known as initiation, propagation, elongation and termination

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Transcription and Regulation
The closed complex at bacterial promoters is

not affected by promoter mutations
not affected by activator proteins
in equilibrium with free RNA polymerase and the promoter
bound more tightly when repressors are present

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

both (a) and (b)
alpha subunit
sigma subunit
beta subunit

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